Our country's most widespread national DIY market chain, Tekzen, provides service with 132 branches and 2500 employees.In the project where software is used at the highest level, all processes of ERP systems such as finance, accounting, purchasing, category management, order decision support system, turnover-premium management, sales-delivery, consignment, import, export, CRM, store management, handheld terminal applications are used intensively. In Tekzen, which progresses with its own IT structure in the virtual store, all product information is managed from DerinSİS, and order, customer and payment information works in full integration. Tekzen, which uses outsourcing for the central warehouse, is software integrated with Maksimum Logistics, which also works with Derin Bilgi.The data of all transactions, from returns to shipments, are automatically sent from Tekzen, and all stock transactions are automatically transferred. With our Space Efficiency solution, sales-stock-margin comparative efficiency tracking is carried out according to each store's own department structure. Our Lease Management solution has been implemented as a result of the work we have done together, and the progress payments, taxes and control reports of business owners of various types are calculated completely by the system without any errors. Our Mobile Management solution is also available in all stores, and store managers can instantly access all the reports and graphs they need on Android tablets. Tekzen, advancing with Derin Bilgi in the e-invoice system, benefits from DerinSİS's innovative e-invoice-specific opportunities with its direct integration method.Phase II was also put into operation in Tekzen and invoices were automatically generated.In addition to our digital archive solution, we also use our DerinSİS e-Ledger solution to complete the e-Conversion process.He also strengthened it by using it.The entire operation, from import-export modules to store cash register, from expense management to bank receipt entry, has been successfully restructured according to e-Ledger. Our integration with Digital Planet is working in e-Archive. (Vault system IBM Genius Open)